This API also allows you to access another user's watchlist feed, via their private watchlist token. You can view or reset your own watchlist token by visiting Special:Preferences, under "Manage tokens".

The wlexcludeuser parameter only accepts one value; it is not possible to exclude multiple users in a single query.

This API does not return JSON -- the response will always be an xml object representing the feed, regardless of whether you add format=json to your query.

The feed only displays the most recently modified pages. You will not be able to view pages modified more than 72 hours ago via the API.

Although ordinary accounts are granted the right to view their own watchlist by default, bots work differently. You must manually grant the bot this right yourself. You can do so by checking off the "View your own watchlist" right on Special:BotPasswords.